18559177
| Question | Answer |
| USE Crystal FORM CHEM | PYRITE USE: Explosives, Sulphuric Acid, Insecticide CFORM: Cubic, Massive, Pyritohedral CHEM: S |
| USE CHEM | CHALCOPYRITE USE: Copper Ore CHEM: S |
| USE | HEMATITE USE: Iron ore |
| USE | LIMONITE USE: Iron Ore |
| USE | MAGNETITE USE: Iron Ore |
| USE | KERNITE USE: Source of BORAX |
| USE CHEM | BORNITE USE: Copper Ore CHEM: S |
| USE CLEAVAGE CFORM CHEM | GALENA USE: Lead Ore, Paint CLEAVAGE: Cubic, Fracture - None CFORM: Cubic CHEM: S |
| USE CHEM | SULPHUR USE: Explosives, Drugs Insecticides, Acid CHEM: N.E. |
| USE HARDNESS | TALC USE: Powders, Paints, Ceramics, Makeup HARDNESS: 1 |
| USE HARDNESS CHEM | GRAPHITE USE: Pencils, Lubricant, Golf Clubs HARDNESS: 1-2 CHEM: N.E. |
| CORUNDUM USE CFORM HARDNESS | CORUNDUM USE: Gems, Abrasives (Ruby, Sapphire) CFORM: Hexagonal HARDNESS: 9 |
| USE CFORM | KAOLINATE USE: Ceramic, Paper CFORM: Fine Grained Massive |
| USE CLEAVAGE CFORM CHEM | HALITE USE: Salt, Chlorine CLEAVAGE: Cubic CFORM: Cubic CHEM: H (rock salt) |
| USE CHEM | MALACHITE USE: Copper, Gems CHEM: CO3 |
| USE CLEAVAGE FRACTURE CHEM | SATIN SPAR USE: Plaster Cleavage - Good parting fibrous Fracture - Uneven CHEM: SO4 |
| USE CLEAVAGE FRACTURE CHEM | SELENITE USE: Plaster, Soil Conditioner CLEAVAGE: One Perfect FRACTURE: Conchoidal CHEM: SO4 |
| CFORM CHEM | APATITE CFORM: Hexagonal, Granular CHEM: P |
| USE FRACTURE | CHALCEDONY USE: JEWELRY FRACTURE: Conchoidal |
| USE CLEAVAGE | MUSCOVITE USE: Computer Chips, Makeup, Insulation CLEAVAGE: One perfect |
| USE | OLIVINE USE: Rock Forming |
| USE | AUGITE USE: Rock-forming |
| USE | HORNBLENDE USE: Rock-forming |
| FRACTURE CFORM HARDNESS | QUARTZ FRACTURE: Conchoidal CFORM: Hexagonal HARDNESS: 7 |
| USE CLEAVAGE | ORTHOCLASE USE: Rock-forming CLEAVAGE: 2 @ rt angle |
| USE CLEAVAGE | BIOTITE USE: Rock-forming, rubber, paint CLEAVAGE: One perfect |
| USE | BAUXITE USE: Aluminum ore |
| USE CLEAVAGE | PLAGIOCLASE USE: Rock-forming CLEAVAGE: 2 @ rt angle |
| USE CLEAVAGE CFORM CHEM | CALCITE USE: Cement, Antacids CLEAVAGE: 3 Directions CFORM: Rhombohedral CHEM: CO3 |
| USE HARDNESS | FLUORITE USE: Flux in steel making, Acid HARDNESS: 4 |
| USE FORM | GARNET USE: Gemstone, Abrasives FORM: 12 faced crystal |
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